What a rewards card actually does
A rewards card is a credit card that gives you cash back, points, or miles on the money you spend. When you use the card to buy something, the card issuer — the bank or company that issued it — pays you a small percentage of that purchase back to you later. That percentage is usually between 1 and 5 percent, depending on what you buy and which card you have.
The catch is that rewards cards almost always charge an annual fee, ranging from zero dollars to several hundred dollars. Some cards have no annual fee but offer lower rewards rates. Others charge $95 or $300 a year but give you higher rewards or extra perks like travel insurance. The math only works in your favor if the rewards you earn exceed what you pay in fees — and only if you pay off your balance in full each month.
If you carry a balance and pay interest, the interest charges will almost always be larger than any rewards you earn. A card offering 2 percent cash back does not help you if you are paying 18 percent interest on an unpaid balance.
Key Takeaways
- Rewards cards only make financial sense if you pay your full balance every month, because interest charges will exceed any rewards you earn.
- The card issuer makes money from merchants who pay a fee when you use the card, which is why they can afford to pay you back a small percentage.
- Your rewards rate varies by category — groceries, gas, dining, travel — so you earn more on some purchases than others.
- An annual fee of $95 or more only makes sense if you spend enough in a year to earn back more than the fee costs.
- Rewards cards do not improve your credit score more than any other credit card; the benefit is purely the cash or points you receive.
How the rewards actually get paid to you
Most cards offer rewards in one of three forms: cash back, points, or miles. Cash back is the simplest — you earn a percentage of each purchase and can redeem it as a statement credit or a deposit to your bank account. Points are a proprietary currency that the card issuer creates; you accumulate them and trade them for rewards like gift cards, merchandise, or travel. Miles work the same way but are specifically for airline or hotel redemptions.
The redemption process varies by card. Some cards let you redeem rewards automatically as a statement credit with no minimum. Others require you to reach a threshold — say, 5,000 points — before you can cash out. Some cards let you redeem for cash but offer a better value if you use the points for travel instead. Read the fine print on your specific card to understand when and how you can actually use what you earn.
Rewards do not expire on most major cards, but some issuers do let points expire if your account is closed or inactive for a long period. Check your card's terms to see whether your rewards have an expiration date.
Which categories earn you the most
Most rewards cards pay different rates depending on what you buy. A common structure is 5 percent back on groceries, 3 percent on gas and dining, and 1 percent on everything else. Some cards let you choose which categories earn the higher rate, or they rotate categories each quarter. A few cards offer a flat rate — say, 2 percent on all purchases — which is simpler but usually lower overall.
The category structure matters only if you actually spend money in those categories. A card that pays 5 percent on airline tickets is worthless if you never fly. Before choosing a card, look at your own spending from the past three months and see where your money actually goes. Then find a card whose bonus categories match your real habits.
Some cards also offer sign-up bonuses — a large lump of points or cash back if you spend a certain amount in the first few months. These bonuses can be substantial, but they only help if you were going to spend that money anyway. Do not spend extra just to hit a bonus threshold.
When the annual fee is worth paying
A card with a $95 annual fee only makes sense if you earn at least $95 in rewards per year. If you spend $5,000 a year on a card that pays 2 percent cash back, you earn $100 — enough to cover a $95 fee and have $5 left over. If you spend $2,000 a year, you earn $40, which does not cover the fee.
Some premium cards charge $300 or more per year but include perks beyond rewards: travel insurance, airport lounge access, statement credits for specific purchases like dining or travel, or concierge services. These perks have real value only if you use them. A $300 annual fee is worth it if you get a $100 travel credit, a $100 dining credit, and $150 in rewards — but only if you actually use those credits and would have paid for those things anyway.
Many cards waive the annual fee for the first year, which gives you a chance to test whether the rewards rate and perks are worth the cost. If you do not use the card enough in year one to justify the fee, cancel before the second year and switch to a no-annual-fee card instead.
How rewards cards affect your credit score
Opening a rewards card does affect your credit score, but not because of the rewards themselves. When you open any new credit card, the issuer does a hard inquiry into your credit report, which temporarily lowers your score by a few points. Your score also drops slightly because you now have a new account with a short history.
Over time, a rewards card can help your score if you use it responsibly. Paying on time every month builds a record of reliable payment. Keeping your balance low relative to your credit limit improves your credit utilization ratio, which is a major factor in your score. These benefits come from responsible credit use, not from the rewards themselves — you would get the same score boost from any credit card used the same way.
If you open multiple rewards cards in a short period to chase sign-up bonuses, the repeated hard inquiries and new accounts can hurt your score more than the benefits help. Space out new card applications by at least a few months if you are concerned about your score.
The real reason card issuers offer rewards
Card companies do not offer rewards out of generosity. They make money from two sources: the interest you pay if you carry a balance, and the fees that merchants pay when you use the card. A merchant typically pays the card issuer 2 to 3 percent of the transaction amount. If you earn 2 percent cash back, the issuer is still making money on the merchant fee, and they are betting that you will eventually carry a balance and pay interest.
This is why rewards cards are designed to encourage you to spend more. The more you use the card, the more the issuer makes from merchant fees. If you then carry a balance, they make even more from interest. The rewards are real, but they exist because the issuer expects to make more money from you than they pay out in rewards.
Understanding this dynamic helps you use rewards cards strategically. If you are someone who pays in full every month and does not overspend just because you have a card, you can come out ahead. If you tend to carry a balance or spend more when you have access to credit, a rewards card will cost you money despite the rewards.
Comparing rewards cards to other options
A rewards card is not the only way to earn money back on your spending. Some checking accounts offer cash back on debit card purchases, though the rates are usually lower — typically 0.5 percent or less. Some retailers offer their own branded credit cards with rewards specific to that store. Some payment apps like PayPal or Square Cash offer small cash back on certain transactions.
The advantage of a general-purpose rewards card is that it works everywhere and the rewards accumulate faster. The advantage of a store card or checking account rewards is that there is no annual fee and no temptation to overspend. If you are not sure whether rewards are right for you, start with a no-annual-fee card that offers 1 to 2 percent cash back on all purchases. This gives you the benefit of rewards without the risk of paying a fee you do not recoup.
Frequently Asked Questions
Do I need good credit to get a rewards card?
Most rewards cards require good to excellent credit — typically a score of 670 or higher. If your score is lower, you may not be approved, or you may be approved for a card with a lower rewards rate and no annual fee. Check your credit score before you explore so you know what to expect.
What happens to my rewards if I close the card?
On most cards, you keep the rewards you have already earned even after you close the account. However, some cards do expire rewards if the account is inactive for a long time. Check your card's terms before closing it, and redeem any remaining rewards first.
Can I use multiple rewards cards to earn more?
Yes, many people use multiple cards strategically — one for groceries, one for gas, one for dining — to maximize rewards in each category. The downside is managing multiple accounts and multiple annual fees. Only do this if you can keep track of due dates and pay each card in full every month.
Do rewards cards help me build credit faster?
A rewards card builds credit at the same rate as any other credit card. The rewards themselves do not affect your score. What matters is paying on time and keeping your balance low. You get the same credit benefit from a no-fee card as from a premium rewards card.
What if I spend the rewards and then carry a balance?
If you earn $100 in cash back but then carry a $500 balance at 18 percent interest, you will pay roughly $90 in interest charges over a year. You came out $10 ahead on the rewards, but you are now in debt. Only use a rewards card if you can pay the full balance every month, regardless of the rewards.